SYSTEM-SIZE DEPENDENCE OF PARTICLE PRODUCTION AND COLLECTIVITY FROM THE STAR EXPERIMENT AT RHIC

被引：1

作者：

Liu, Tong ^{[1
]}

机构：

[1] Yale Univ, Wright Lab, New Haven, CT 06520 USA

来源：

ACTA PHYSICA POLONICA B PROCEEDINGS SUPPLEMENT | 2023年 / 16卷 / 01期

关键词：

COLLISIONS;

D O I：

10.5506/APhysPolBSupp.16.1-A75

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Medium modification of particle spectra and the origin of collectivity in small collision systems are widely debated topics in the heavy-ion community. To address these open questions, we propose the study of particle production and collectivity for varying system sizes, Au+Au > Ru+Ru/Zr+Zr > Cu+Cu > d+Au > gamma+Au, available at RHIC using the STAR detector. We present the first measurements of centrality-dependent charged hadron production in isobar (Ru+Ru and Zr+Zr) collisions, including the nuclear modification factors (R-AA) at high transverse momentum (p(T)), and identified particle spectra at low p(T) at mid-rapidity. Combined with existing results from other systems, they probe system-size and collision geometry dependences of the medium modification to particle production. In addition, we present the measurement of particle production and long-range di-hadron correlations in gamma+Au events using ultra-peripheral Au+Au collisions at RHIC.

引用

页数：6

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